Collective atomic recoil lasing with a partially coherent pump

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We investigate the effect of pump phase noise on the collective backscattering of light by a cold, collisionless atomic gas. We show that for a partially coherent pump field, the growth rate of the backscattered field is reduced relative to that for a coherent pump, but the backscattered intensity can be increased. Our results demonstrate that fluctuations and noise can play a counterintuitive role in nonlocally coupled many-body systems.
Original languageEnglish
Pages (from-to)253601-253604
Number of pages3
JournalPhysical Review Letters
Issue number25
Publication statusPublished - 21 Dec 2007


  • physics


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